During what time frame has species extinction caused by humans been the highest

The extinction caused by humans has been the highest in the Holocene or Anthropocene epoch or in the last 11,700 years but has been much more pronounced in the last probably 200 years of human history. A combination of overpopulation by humans and unbridled consumption has exacerbated this. This the 6th major extinction. Such things as degradation of coral reefs, acidification of the oceans and reduction of rain forest areas are some of the things that have contributed to this.

Mantle convection is the process that drives plate tectonics. the theory of plate tectonics states that the crust is divided into plates that float on the semi molten mantle below. the circular motion of the magma as it slowly rises and falls or move though convection cells drags the plates along causing them to move. the heat source in the lamp would represent the earth's core. the core is the source of energy that drives convection in the mantle. the lava represents molten magma under the earth's surface. if the lava lamp had floating pieces they would move as the circular motion of the lava in the lamp as it rises and falls would move them along the surface. these floating pieces would represent pieces of the earth's crust.